在低温水基混合电容器的水凝电解质中粘附和抗性能的合
Jingya Nan1, Yue Sun1, Fusheng Yang1
1Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Laboratory of Biomass Energy and Material, Jiangsu Province, Nanjing, 210042, Jiangsu, People's Republic of China.
Nano-micro letters
|November 20, 2023
概括
研究人员开发了一种用于固态离子电容器的新型水凝电解质. 这种电解质提供了优异的低温性能和稳定性,提高了储能安全性和效率.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 固态离子电容器为储能提供了更高的安全性和稳定性.
- 由于环保性,导电性和灵活性,水凝电解质是有希望的.
- 在电解质/电极接口接触和低温性能方面仍然存在挑战.
研究的目的:
- 开发具有改善界面粘附性和抗性能的水凝电解质.
- 提高离子电容器的实际应用,特别是在低温下.
- 创建一个稳定和高性能的储能解决方案.
主要方法:
- 使用坚固的矩阵和化学 anchorage 制造水凝电解质.
- 加入ZnCl2和LiCl混合盐用于合作溶解.
- 测试一个Zn下载的碳纳米管混合电容器与开发的电解质.
主要成果:
- 水凝电解质表现出高的界面粘附和抗能力.
- 混合电容器在-60°C下实现了高能量密度 (39Wh kg-1),在10,000个周期内保持了98.7%的容量.
- 该设备在动态变形和1000次紧张周期下在-60°C下保持了功能.
结论:
- 开发的水凝电解质使低温离子电容器能够稳定运行.
- 该战略解决了接口接触和低温性能方面的关键挑战.
- 这项工作为先进的储能解决方案提供了强大的方法.
相关概念视频
Dielectric Polarization in a Capacitor
4.7K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
4.7K
Aqueous Solutions and Heats of Hydration
14.7K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
14.7K
Capacitor With A Dielectric
4.0K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
4.0K
MOS Capacitor
802
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
802


